tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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asyncitems-arraylike-promise.js (912B)

      1 // |reftest| async
      2 // Copyright (C) 2022 Igalia, S.L. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-array.fromasync
      7 description: >
      8  Array.fromAsync tries the various properties in order and awaits promises
      9 includes: [asyncHelpers.js, compareArray.js, temporalHelpers.js]
     10 flags: [async]
     11 features: [Array.fromAsync]
     12 ---*/
     13 
     14 asyncTest(async function () {
     15  const actual = [];
     16  const items = TemporalHelpers.propertyBagObserver(actual, {
     17    length: 2,
     18    0: Promise.resolve(2),
     19    1: Promise.resolve(1),
     20  }, "items");
     21  const result = await Array.fromAsync(items);
     22  assert.compareArray(result, [2, 1]);
     23  assert.compareArray(actual, [
     24    "get items[Symbol.asyncIterator]",
     25    "get items[Symbol.iterator]",
     26    "get items.length",
     27    "get items.length.valueOf",
     28    "call items.length.valueOf",
     29    "get items[0]",
     30    "get items[1]",
     31  ]);
     32 });